摘要微带贴片天线是在一个薄的介质基片上，一面附上金属薄层作为接地板，另一面用光刻腐蚀等方法做出一定形状的金属贴片，利用微带线或者同轴探针为贴片馈电，属于印刷天线。微带天线在形状和设计尺寸上具有较大的灵活性，体积小、重量轻、适合大规模生产、成本低并且便于实现圆极化、双频段、双极化等多功能状态。64599

    锥状波束天线是一类波瓣图和极化方向径向对称、最大辐射方向与法线成一定倾角的天线。由于其在方位角上的全向性能够实现较大的覆盖范围，所以广泛应用于车载卫星通信、无线本地局域网和导航跟踪等系统中。

本文先介绍微带天线的基本知识，然后介绍如何利用圆贴片微带天线产生锥状波束，最后使用HFSS软件设计实现30°锥角的锥状波束，天线的中心工作频率为12.5GHz，最终的仿真结果达到了设计的目标。

毕业论文关键词：微带贴片天线 锥状波束 HFSS  仿真

毕业设计说明书（论文）外文摘要

Title  Design on circular microstrip patch antenna with  conical beam                           

Abstract Microstrip patch antenna is a mental patch, which is attached to a thin dielectric substrate. One side of the dielectric substrate is covered with thin mental lamina which is considered as the ground plate, and the mental patch which is made by Lithography etching method,which is attached to the other side of the dielectric substrate. The patch is feed by a microstrip line or a coaxial probe,and it belongs to printed antenna. Microstrip patch antenna has many advantages, which includes small size、weight light、conveniency of mass production、low cost and ease to realize circular polarization, dual frequency and dual-polarization state. 

Conical beam antennas (CBA) are a kind of antenna whose pattern and polarization are symmetrical in radial direction. The maximum radial direction perges from the normal direction with a specified angle. Because of their omni-direction characteristic in azimuth, a large coverage area can be achieved. Therefore, CBAs are widely used in vehicle satellite communication, wireless local area networks, and navigational tracking systems. 

First of all, we will introduce the basic knowledge of microstrip antennas. Then we will introduce how to produce conical beam with a circular patch microstrip antenna. Finally it gives a brief introduction of HFSS and design an antenna whose taper angle is 30°and working central frequency is 12.5GHz. Simulation results match well with the design objective.

Keywords: microstrip patch antenna, conical beam, HFSS, simulation

目录

1 绪论 1

1.1 微带天线 1

1.2锥状波束天线 1

1.3 本文内容安排 2

2 圆贴片微带天线模式分析 2

2.1 微带天线基本理论 2

2.1.1微带天线的基本类型 2

2.1.2微带天线的分析方法 3

2.1.3 微带天线的馈电方式 4

2.2圆贴片的辐射模式 6

3 锥角30°的圆贴片锥状波束设计 8

3.1 工作模式的选定 8

3.1.1 天线模型的建立 8

3.1.2 圆形天线工作模式选定 9

3.2 天线的匹配